1.75ct Sapphire (Oval, 9.12×6.08mm, Blue) vs 1.75ct Diamond (Oval, 9.78×6.52mm, Light Blue)
Quick summary: When looked from above (face-up position), 1.75ct Diamond (9.78×6.52mm, oval cut) appears 15% larger than 1.75ct Sapphire (9.12×6.08mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 1.75ct Sapphire (oval cut) |
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1.75ct Diamond (oval cut) |
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| 9.12×6.08 mm | 9.78×6.52 mm | |
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Actual sizes of
1.75ct Sapphire Oval (9.12×6.08mm, Blue)
and
1.75ct Diamond Oval (9.78×6.52mm, Light Blue)
as they would appear on a ring and finger.
Adjust the ring and finger size to get an idea of how these gemstones would look on your finger.
Where to buy?
For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile
Face-up Size
All things being equal, Sapphire will face-up smaller than Diamond for a given
carat weight, because it has higher specific gravity
(4 vs. 3.52 - this means it's "heavier" compared to Diamond of the same size). Face-up size also depends heavily on the
proportions of the cut.
Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.
Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.
| 1.75 Ct Sapphire (Oval) | 1.75 Ct Diamond (Oval) | |
| 9.12×6.08 mm | vs | 9.78×6.52 mm |
| 45.47 mm² | 52.29 mm² |
| 1.75ct Sapphire Oval (9.12×6.08mm) | |
| 1.75ct Diamond Oval (9.78×6.52mm) | |
| Difference: 15% (6.82 mm²) |
1.75ct Diamond Oval (9.78×6.52mm) has approx. 15% more face-up area than 1.75ct Sapphire Oval (9.12×6.08mm).
Popular comparisons:
- 1.75ct Sapphire (Oval, Blue, 9.12 x 6.08) vs. 2ct Sapphire (Oval, Blue, 9.53 x 6.35)
- 1.75ct Sapphire (Oval, Blue, 9.12 x 6.08) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 1.75ct Sapphire (Oval, Blue, 9.12 x 6.08) vs. 1.75ct Diamond (Oval, White, 9.78 x 6.52)
- 1.75ct Sapphire (Oval, Blue, 9.12 x 6.08) vs. 1ct Tanzanite (Oval, Blue, 8.07 x 5.38)
- 1.75ct Sapphire (Oval, Blue, 9.12 x 6.08) vs. 1ct Ruby (Oval, Red, 7.56 x 5.04)
- 1.75ct Sapphire (Oval, Blue, 9.12 x 6.08) vs. 1ct Diamond (Oval, White, 8.12 x 5.41)
- 1.75ct Sapphire (Oval, Blue, 9.12 x 6.08) vs. 1.75ct Sapphire (Round, Blue, 7.2 x 7.2)
- 1.75ct Sapphire (Oval, Blue, 9.12 x 6.08) vs. 0.5ct Sapphire (Oval, Blue, 6 x 4)
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Actual size is currently adjusted to screen.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.